I don't use Google Photos normally, but wanted to check this feature out. I don't use cloud storage, and the app is updated. However I don't see this button. Am

I don't use Google Photos normally, but wanted to check this feature out. I don't use cloud storage, and the app is updated. However I don't see this button. Am I doing something wrong? Is it supposed to decide for me which photos are suitable and only then display a button?